Band Apply Servo: Service and Repair

REMOVAL
1. Remove valve body.

Fig. 85:

2. Remove servo piston cover snap ring with snap ring pliers (Fig. 85).

Fig. 86:

3. Remove servo piston and cover with compressed air. Apply compressed air through oil hole in servo boss to ease piston out of bore (Fig. 86).

Fig. 87:

4. Remove and discard seal and O-rings from cover and piston (Fig. 87). Inspect E-ring, piston, spring and retainer, piston rod and piston spring. Replace worn or damaged parts.

INSTALLATION
1. Install new seals on cover and piston.
2. Lubricate servo components with transmission fluid.
3. Assemble and install servo components in case. Be sure servo piston rod is properly engaged in the second coast brake band.
4. Compress cover and piston and install cover snap ring.
5. Install valve body, oil screen and oil pan.